Showing posts with label topeak pocket rocket. Show all posts
Showing posts with label topeak pocket rocket. Show all posts

Sunday, September 7, 2014

Review of Sunlite Bicycle Dog Leash

Sunlite Bicycle Dog Leash
Customer Ratings: 4 stars
List Price: $29.98
Sale Price: $22.21
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The product is a good idea and is built very well. The construction is very beefy and welds are solid. There is one thing I would strongly caution individuals considering this product, however. It does not fit well on frames of bicycles that do not have a "standard" design. In other words, if the lower frame support from the pedals to the rear tire is not straight, you will have an issue. My bicycle has bends in the frame in that area. I tried to "make it work", but halfway through the ride with my dog, he darted to one side and ripped the back wheel out of the frame.

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I really like this dog leash. I use it for my border collie mix, my lab mix and my foster dog which is a Dachshund mix. The border collie pulls the bike, which I don't like, but she doesn't get tangled in the leash or the bike so it still works fine. I have to be very careful with her because if she gets distracted (squirrel, other dog, etc.) even though she is less than fourty pounds she can pull the back end of the bike out of balance. I have not ever fallen, but I have to pay extra special attention when I ride with her. The other two are great. They follow along at whatever pace I set and it is great. I would be concerned about anyone using this with a large dog or a high energy dog. My recommendation would be to just keep your eyes open and be ready for anything. Other than that, my pack gets a good run every morning and they really seem to enjoy it.

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Looking for a way to get your dog the exercise he/she needs? this is one of the best. There are other fancier designs for more dough with springs and leashes off to the side, but design one works well.

I've heard: "A tired dog is a happy dog" and that I've experienced first hand in the past. I've been very excited about getting this bike leash and my excitement was warranted it's exactly what I needed. I can ride a lot further than I can walk, I don't get bored, I have more fun, I can coast down hills, and all while I'm exercising the dog the dog gets a much better workout than I could ever give him on my own two feet.

It doesn't come with instructions which I found odd, but it is easy to slip the catch on the rear axle and velcro the bar to one of the crossbars of the bike it doesn't require any modifications to the bike and I had mine on in about 10 minutes of thinking and 3-4 minutes of trying it out. I didn't even need any tools, just used the quick release on the rear wheel. I believe it would fit on any bike but I'm no expert on bikes.

My dog is very strong, and is still a puppy. I have a mountain bike with thick tread tires, and he can pull left and right and not have any problems with falling over at all. I could feel the pull but it didn't cause any problems of balance or falling and it did not appear at any time to be dangerous to the dog.

It's worked out well for me, I hope it works out well for you too.

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UPDATE: SAFETY WATCH-OUT: With more experience I've had my 100 lb Greyhound Husky mix, who pulls hard to the side at squirrels, bend my rear axle quick release hub while riding, which made my mountain bike back wheel loose. Yesterday while at the bike shop getting new pedals for my wife's bike I noticed a bike on the stand with the same Pyramid bike leash as mine, with original red leash. I mentioned to the shop tech that I had the same item but had changed it out due to the safety issues with my bigger dog. He told me that the bike was in the shop because the dog had bent the quick release hub on that bike so badly that he had trouble getting it out of the bike. Because of this safety issue with bigger dogs I've lowered my rating of this item to three stars. I think it still works well with smaller dogs and medium sized dogs that don't pull, but would not recommend it with larger dogs on a bike with a quick release hub. I think it would be much safer with a rear axle that uses the old fashioned thread and nut due to the much larger and stronger components. In any case if you are using this with a big dog with a quick release axle consider going slower and checking the rear axle frequently. One thing I've considered but haven't tried would be putting a sleeve, like a long washer, over the shaft of the quick release axle make it stronger so it won't bend. It may be worth a try if you are handy with this sort of thing.

I changed mine out to a home made unit that I bolted on. Same concept but studier with my big dog. I picked up a 3/4" x 3/4" square aluminum tube from H Depot. Drilled a through hole in my lower frame that holds the rear tire in two places and bolted it on. I did the bolt holes vertically so they would not affect the up and down stresses and used the smallest diameter bolts, Like 1/8". The end of the tube goes about 10" behind my tire where I drilled a vertical hole that I smoothed (to prevent wear) and thread my bungee through and then tie a knot to prevent it from pulling through the hole. And yes because its on the bottom of the frame I have to unbolt my bracket to remove my rear wheel.

Original: Only 4 stars because attachment to bike frame is a little hokey, but nevertheless it has worked well. I've owned this for a few weeks. I have two dogs I run on this. The larger is 100 lb husky greyhound mix that dashes to the side to chase any small prey (squirrels). I looked at all available similar products and went with this one because it attaches to the lowest point on the bike giving me the most stability when my dog pulls hard to the side. I've also replace the rigid nylon leash supplied with a bungee cord to lessen the shock on both the dog and me when he pulls. If you use a bungee cord make sure it is short enough that the dog can not stretch it so that he can run in front of the front wheel. I started with a 1/8" nylon bungee cord which worked surprising well for a week and then broke at the knot. Now I'm using a 1/4" nylon bungee cord that works really well. My larger dog pulls me with this for about 2 miles at 15-20 MPH (I'm NOT peddling) before he begins to tire. When he pulls sideways hard and sharply, I can feel it but its very controllable on good ground or pavement (I'm 150 lbs). I Haven't tried it in the snow yet, but may switch to bike snow tires. With my larger dog, I use a gentle leader which attaches to his head instead of a regular harness. This may help in limiting how hard he pulls to the side. My smaller dog, a 65 lb border collie / cattle dog mix runs along like he was made for it. I have him in a regular chest harness.

Attaching to the bike. See photos. Important if you have a quick release, the bracket is about 1/4" thick and it is likely that you will need to get a longer rear axle skewer/quick release. I tried to use the one I had but could only grab a few threads which I stripped out. My local bike shop gave me another one for free that was a little longer and had a Steel nut instead of an aluminum nut so I could tighten it hard, which I think is needed more so than a regular wheel attachment. I would have felt better if I was using an old fashioned rear axle that had a threaded shaft and nut that I could have cranked hard.

Safety to consider. Some of the other devices sell a breakaway piece that attaches on the leash. This way in case you or your dog get on the wrong side of a pole, tree, or other unmovable object the breakaway piece safely breaks at a low enough force prevent harm to your dog and you. Worth considering (I should take my own advice)

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My 10 y.o. son has bike leash attached to his bike and runs our very energetic lab/pit mix everyday. Bike leash is very sturdy and easy to use. Great for covering more ground quickly if unable to take a walk with your dog. Also helpful in establishing the bike rider as a pack leader. Highly recommend this item to anyone with an energetic dog.

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Saturday, June 7, 2014

SRAM 36h Automatix 2 Speed Rear Hub Reviews

SRAM 36h Automatix 2 Speed Rear Hub
Customer Ratings: 4 stars
List Price: $85.00
Sale Price: $65.89
Today's Bonus: 22% Off
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I installed this hub on my drop bar steel commuter bike. Using a 21t rear cog and a 38t front chainring, I get a good 48 gear inch low gear for starting out and climbing steep hills, and a 67 gear inch high gear that isn't too hard for the frequent wind advisory days we have around here. The hub shifts at 11.5 mph with my 700c wheels, making a great shift point when sprinting through intersections. If I need to climb a steep hill, I simply slow to just under 11mph and spin my way up the hill. The gearing is perfect for my commute. The automatic shifting feature is a great asset in stop-and-go city traffic. My normal cruising speed on this bike is 17-20 mph when my headwind is below 25 mph.

If you build this hub into a smaller wheel, the shift point will be lower than my 11.5 mph. This may be problematic for use on a folding bike, which would otherwise be an ideal use for this hub.

EDIT: I have located an online forum thread that describes how to adjust the shift point in the hub. I'm not saying you should do it. Any modification is at your own risk, and will certainly void the warranty. You can locate the forum thread by searching "ctc forum automatix" in Google.

The good: Easy to use, predictable shifting, and very little drag (noticeably less drag in high gear than the Nexus 3 hub it replaced)

The bad: When coasting at a speed above the 11.5mph shift point, the hub drops back into low gear. It shifts back up as soon as you start pedaling. You get used to it, and don't notice it after a while. Also, with my hub you can hear a light rattling noise when coasting over bumpy surfaces. I venture to guess its a result of the centrifugal weights not being engaged, but I haven't taken the hub apart to investigate. It's not a loud rattle, and it doesn't sound like anything's wrong with the hub. When pedaling over bumpy surfaces, the light rattle is not present.

All in all, I really like the Automatix hub. It has its minor imperfections, but it's simple and works well for city riding.

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I have a Sram automatic on my retro 87 fuji with 700c rims. First thing to note is that a normal size chain ring is to big for the gearing. I have reduced my front to a 38t which works perfectly.

One odd thing to note is the hub is preset at the factory to automatically shift at 7 or 11 mph. There is no way to determine the configuration before purchase or easy way to adjust the shift points.

Overall I'm impressed with it. Reducing the front chain ring to a 38t made a huge difference.

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Pros: gives you an added gear while commuting; clean looking; fairly quiet

Cons: Heavy. Shifts WAYYYY to early. Shifts going uphill. Downshifts when coasting.

As shipped, it is basically a granny assist gear and will shift after a few pedal revolutions. I took apart the hub and followed internet instructions to modify the shift point. The modification worked, but it was a real pain in the you know what. Little info from SRAM about this hub on the web.

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Like this hub a lot am using on a bike i ride to work. It is very smooth in how it shifts and very reliable, no messy shifts leaving you hanging in a intersection .A slight pause in the peddling is all it takes to shift into low gear The only maintenance i have had to do is tension the chain and keep it lubed . The key to be happy with this is to select the proper gearing . What worked for me was to find the highest gear that i could ride my whole commute in with my derailed geared bike mashing up the hills. Determine the gear inches using a chart and then making this my mid range for this hub. Then set this up by buying the optimum front chain ring. This gave me a low gear i am not going to blow my knees out with and a much better high gear so no spinning like mad man on the flats. This winter i want to set my mountain bike up with one of these.

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The shift point is set so low that it shifts after 3-4 slow easy revolutions. My attempt to follow internet instructions to change this resulted in destroying the pins holding the commas in place. SRAM customer service was polite in stating no parts are available. The wheel is a total loss, so beware.

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