So I got the cheapest HT on ebay...

bcredneck

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I just got the cheapest motor I could find just to see how bad it could really be. I put it together this morning threw every tool I used putting the kit together in my bag and took off.

My first impressions of the the kit were s**t worst casting I have ever seen I think the guy took a old beat HT and made a new mold or something.
engine was locked at first I oil soaked the top end before trying to turn it.
The rear sprocket was just insane I had to hammer it flat and bend all the teeth with a cresent wrench after that I had to roll it while watching what tooth pushed the chain up.

I ran the bike 70km the chain kept poping off for the first 5 while I messed around with the teeth and the tentioner. After 10 I blew out the exhaust gasket and the pipe kept coming off for a bit so I fixed that crap.

Then peace it just kept going. it shakes worse than I've ever seen before and is totally gutless but it runs for now
 
I think I saw you ride past me at the beach yesterday, lol. :p
Not really but some guy did and it made me even more determined to build something better than that (and not ride at the beach in daylight anyway).
 
I'm going to order a couple better engines right away. I was planning that since I ordered this one I was just wondering if there really is a difference between the cheaper ones and the engines with serial number tags. and there is a massive difference every part but the carb tank and chain is just crap
 
I'm going to order a couple better engines right away. I was planning that since I ordered this one I was just wondering if there really is a difference between the cheaper ones and the engines with serial number tags. and there is a massive difference every part but the carb tank and chain is just crap
I used to have good luck with the cheap kits
All of mine used to run good out of the box but that was about a year ago so I'm sure their quality control was different

I always had head gasket and exhaust gasket issues
 
I was just wondering if there really is a difference between the cheaper ones and the engines with serial number tags.
Yes there is a definite difference in engine kit quality.

The only 2-stroke kit I trust is a Real Skyhawk GT5A.
http://www.bicycle-engines.com/2-Stroke-Engine-Kits/

Speaking of which I need to order a special GT5A kit today...
It's going on a GT2A gas tank frame and will be a 7-speed shifter with dual disc brakes.

I don't need the gas tank or any of the left side drive parts.
The guys over at BirdDog Distributing (bicycle-engines) are pretty cool, and since they carry the frames I'm sure they can come up with a custom kit for them.
 
Yes there is a definite difference in engine kit quality.

The only 2-stroke kit I trust is a Real Skyhawk GT5A.
http://www.bicycle-engines.com/2-Stroke-Engine-Kits/

Speaking of which I need to order a special GT5A kit today...
It's going on a GT2A gas tank frame and will be a 7-speed shifter with dual disc brakes.

I don't need the gas tank or any of the left side drive parts.
The guys over at BirdDog Distributing (bicycle-engines) are pretty cool, and since they carry the frames I'm sure they can come up with a custom kit for them.


Available in Canada at http://www.motorizedbicycle.ca/
I have no connection with them other than my 2 orders were fast and accurate and I got what I expected for quality.

Incidentally, FURRY, GET ON WITH IT!
What are you waiting for? My GT5A and GT2A are running many, many miles, just fine. JUST DOT IT! The water is warm. :) JUMP IN!
Buy any sort of standard bike (so the tubes fit the mounts, used $25-$50) and pop the motor in. Wheeeee!
I put 20-100kms a day on these things. Either motor is great.

I just switched my GT2A shifter into single speed last night, BTW.
After messing with ratios and such, for my riding at this time (engine development and long distance) I like the single speed better.
I may switch back to a shifter when I start looking for an off-road oriented suspension MTB.

Steve
 
Available in Canada at http://www.motorizedbicycle.ca/
I have no connection with them other than my 2 orders were fast and accurate and I got what I expected for quality.

Incidentally, FURRY, GET ON WITH IT!
What are you waiting for? My GT5A and GT2A are running many, many miles, just fine. JUST DOT IT! The water is warm. :) JUMP IN!
Buy any sort of standard bike (so the tubes fit the mounts, used $25-$50) and pop the motor in. Wheeeee!
I put 20-100kms a day on these things. Either motor is great.

I just switched my GT2A shifter into single speed last night, BTW.
After messing with ratios and such, for my riding at this time (engine development and long distance) I like the single speed better.
I may switch back to a shifter when I start looking for an off-road oriented suspension MTB.

Steve

LOL! Steve, I have very limited funds and other priorities (not just my other bicycles).
However, I am still collecting parts that are available in the UK. I just finally got my fourth chainring, that's $100USD (equivalent) so far just on chainrings, twice what you suggest spending on a whole bicycle! They're all mismatched colours haha but I think I will have the only 33/44/56/48 chainset. Yay! :) I only have about half the money I need to pay SBP and some idiots just ruined our currency. :( I will spend more on wheels than the amount you suggest spending on a whole bike, not because I'm rich but because (I value my life and) I want to build it like that. :p
I have two finished, reliable bicycles that I'm happy with (out of eight, lol) and I can pedal them just fine; bolting on the stock eBay motor kit wouldn't improve any of my bikes. My studs are useless anyway, two lost their threads just taking the acorn nuts off. :confused: Also, I would not like to ride on road and have the wheel lock up, not at the stupid speeds I (already) go. :eek:

Anyway I forgot what this thread is even about now haha. I'm off to make pizza from scratch because that's the way I do it. :cool:
 
I'm glad you got my humour!
Sometimes we can waste a lifetime waiting to do it perfect, when we could have had the time of our life just doing it!

I'm talking about women of course.

Steve

PS, took the shifter off the GT2A.
Knew it was jetted rich but didn't realize how much. Easier to read the engine with no gears.
Lowering float 4mm didn't fix it so with a throttle cable wire strand in the jet.(No jets available)
AWESOME. Tanned up the plug nicely.

Seriously Furry, ya gotta develop the engine on a single speed.
Also note a HUGE vibration on the GT2A that the GT5A did not have.
Jag has some very valid points, you know?

Steve
 
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I'm glad you got my humour!
Sometimes we can waste a lifetime waiting to do it perfect, when we could have had the time of our life just doing it!

I'm talking about women of course.

Steve

PS, took the shifter off the GT2A.
Knew it was jetted rich but didn't realize how much. Easier to read the engine with no gears.
Lowering float 4mm didn't fix it so with a throttle cable wire strand in the jet.(No jets available)
AWESOME. Tanned up the plug nicely.

Seriously Furry, ya gotta develop the engine on a single speed.
Also note a HUGE vibration on the GT2A that the GT5A did not have.
Jag has some very valid points, you know?

Steve

Well, I ditched the woman so I could spend money on bike parts without the guilt trip, LOL! ;)

What I should have said is I'm constrained by legality. Without the best sound reducing mods and the ability to remove a chain and disconnect the engine from the wheel when I'm in built up areas I could get myself arrested and charged with at least four crimes and have my "motor vehicle" confiscated on the spot, leaving me 100km+ from home with a single wheel trailer full of camping and snorkeling gear, food and drink, the fishing rods and all the bags off the bike too. Just too much stuff to carry home on foot. I'd lose my home anyway if I went to prison. :( So it has to be a shifter. :)
But truthfully, I really only want to build a totally custom one-of-a-kind human-ice hybrid, long distance heavily loaded touring bike. :cool: That is what my heart desires, that is what excites me, and I already have half the parts haha! :rolleyes: The stuff I know and can do already is the bicycle stuff, so I want to build that to the best of my ability. The engine stuff is what I am learning from threads here and I can only practice that by upgrading and customising my engine and adding a bunch of American parts.

Why is it easier to read the engine with no gears? Surely plug chops require load, which can be kept fairly constant and consistent with gears?
Why don't you use a walbro style carburetor? I will anyway, but I still wonder what the disadvantages are?
Is the GT2A an engine as well as a frame? I'm confused. :oops:
Yes, Jaguar's posts have been very very helpful and certainly given me a good base of information and understanding of the various options.
As I understand it, part of reducing vibration is/could be done by lowering the engine speed by using gears, and as I read here, certain low/mid range boosting mods and parts. ie, reed valve (with piston and cylinder mods) and deep chamber/ low comp head with suitably adjusted ignition timing. Noise is also reduced by lowering RPM. Engine life and reliability should be better too although that would be mainly because of the lower vibration I think.. But I want gears for other reasons as I said. Oh and I have rear suspension. :D
I guess it shows that there's different ways to build bikes for different uses and desired characteristics. :)
 
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