sweet, between that site, treatland, and ebay, I should be able to build an engine for relatively cheap. So with an AV10 engine, expansion pipe, a couple inexpensive mods, what kind of power do you think I could attain? 5hp? more?
Did a little thinking and decided to not buy any china girls
- Thread starter nobullcraptalk
- Start date
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210061741
Guest
Iv'e seen some cool stuff done with the PUCH moped parts too.
I got this cylinder kit.
http://www.treatland.tv/puch-70cc-reed-valve-kit-especiale-p/puch-reed-kit-especiale.htm
I'm going to fit it on a HT bottom end.
For the motorbecane here is a real crankshaft
http://www.treatland.tv/motobecane-doppler-crankshaft-av7-av10-p/motobecane-doppler-crankshaft.htm
Ive heard people say $100 for a balanced HT crank....Why would you do that????
Id buy a real crank first.
http://www.treatland.tv/category-s/107.htm
And for you Faban.
HERE IS YOUR PROGRAMMBLE ENGINE.
http://www.treatland.tv/HPI-CDI-computer-programmable-dual-curve-p/hpi-cdi-tuner-kit.htm
Your wish is my command.
Provided your credit card is ready.
What are you waiting for.
I got this cylinder kit.
http://www.treatland.tv/puch-70cc-reed-valve-kit-especiale-p/puch-reed-kit-especiale.htm
I'm going to fit it on a HT bottom end.
For the motorbecane here is a real crankshaft
http://www.treatland.tv/motobecane-doppler-crankshaft-av7-av10-p/motobecane-doppler-crankshaft.htm
Ive heard people say $100 for a balanced HT crank....Why would you do that????
Id buy a real crank first.
http://www.treatland.tv/category-s/107.htm
And for you Faban.
HERE IS YOUR PROGRAMMBLE ENGINE.
http://www.treatland.tv/HPI-CDI-computer-programmable-dual-curve-p/hpi-cdi-tuner-kit.htm
Your wish is my command.
Provided your credit card is ready.
What are you waiting for.
2
210061741
Guest
As far as power is concerned that will depend on the Cylinder Kit you buy.
If you search on MOPED ARMY you can find all the specs and rebuild manualsand everything you could possibly need to know to develope a sound plan.
I cant wait to get the cash together to build the whole deal.
Anyway FourEasy put a puch Top End on a HT egine and pushed 7+ HP on a dyno on video.
It's off the hook.
I would anticipate having my Puch HT Hybred complete in the next month.
If you search on MOPED ARMY you can find all the specs and rebuild manualsand everything you could possibly need to know to develope a sound plan.
I cant wait to get the cash together to build the whole deal.
Anyway FourEasy put a puch Top End on a HT egine and pushed 7+ HP on a dyno on video.
It's off the hook.
I would anticipate having my Puch HT Hybred complete in the next month.
SSGSPOD
New Member
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7hp? I'd question the durability of the cases and bearings in a setup on the HT, especially due to the porosity and lack of QA on the castings.............I think that's way beyond being practical and is in the reigon of "diminishing returns" for the money required.
happycheapskate
Active Member
That is an awful lot!
I sure hope someone comes out with a better in frame bicycle motor. I guess the 2 stroke stuff is DIY if you want something reliable.
I sure hope someone comes out with a better in frame bicycle motor. I guess the 2 stroke stuff is DIY if you want something reliable.
Last edited:
2
210061741
Guest
SSGSPOD
I agree to some extent about the HT cases.
I would guestimate im running about 5 hp now and i havent had any problems with the cases. But you do need to beef up the mounting.
Now if you spend the $40.00 to get the AV10 Cases and build the AV 10 ya it's going to cost more than the chineese engine but it'll last a long long time.
Figure most of them mopeds were from the 1970's and many of them still run. So if i spend $400 / $500 to build an engine that will last 30+years i think it's worth it.
It's easy to spend that much on chineese engines in a year.
The other upside is you cand buy parts as you have the funds.
Now my puch cylinder kit on the HT engine is mostly for fun.
And for some expirementing with porting and reed valves.
This is a great hobby.
I agree to some extent about the HT cases.
I would guestimate im running about 5 hp now and i havent had any problems with the cases. But you do need to beef up the mounting.
Now if you spend the $40.00 to get the AV10 Cases and build the AV 10 ya it's going to cost more than the chineese engine but it'll last a long long time.
Figure most of them mopeds were from the 1970's and many of them still run. So if i spend $400 / $500 to build an engine that will last 30+years i think it's worth it.
It's easy to spend that much on chineese engines in a year.
The other upside is you cand buy parts as you have the funds.
Now my puch cylinder kit on the HT engine is mostly for fun.
And for some expirementing with porting and reed valves.
This is a great hobby.
2
210061741
Guest
As far as bearings go the standard moped engine uses the 6203 bearings.
Some of the HT engines used 6203 bearings.
Both are fine.
Here is a comparison.
6202 bearings
d 15 mm
D 35 mm
B 11 mm
D2 30,9 mm
Da max 30,8 mm
d1 21,1 mm
da min 19,2 mm
ra max 0,6 mm
rmin 0,6 mm
m 0,045 kg Mass
Cr 7800 N Basic dynamic load rating, radial
C0r 3750 N Basic static load rating, radial
nG 14000 1/min Limiting speed
nB 0 1/min Reference speed
Cur 220 N Fatigue limit load, radial
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
6203 bearings
d 17 mm
D 40 mm
B 12 mm
D2 34,4 mm
Da max 35,8 mm
d1 24 mm
da min 21,2 mm
ra max 0,6 mm
rmin 0,6 mm
m 0,067 kg Mass
Cr 9500 N Basic dynamic load rating, radial
C0r 4750 N Basic static load rating, radial
nG 12000 1/min Limiting speed
nB 0 1/min Reference speed
Cur 275 N Fatigue limit load, radial
And if you use the proper needle bearings for the con rod they can handle even higher loads.
Some of the HT engines used 6203 bearings.
Both are fine.
Here is a comparison.
6202 bearings
d 15 mm
D 35 mm
B 11 mm
D2 30,9 mm
Da max 30,8 mm
d1 21,1 mm
da min 19,2 mm
ra max 0,6 mm
rmin 0,6 mm
m 0,045 kg Mass
Cr 7800 N Basic dynamic load rating, radial
C0r 3750 N Basic static load rating, radial
nG 14000 1/min Limiting speed
nB 0 1/min Reference speed
Cur 220 N Fatigue limit load, radial
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
6203 bearings
d 17 mm
D 40 mm
B 12 mm
D2 34,4 mm
Da max 35,8 mm
d1 24 mm
da min 21,2 mm
ra max 0,6 mm
rmin 0,6 mm
m 0,067 kg Mass
Cr 9500 N Basic dynamic load rating, radial
C0r 4750 N Basic static load rating, radial
nG 12000 1/min Limiting speed
nB 0 1/min Reference speed
Cur 275 N Fatigue limit load, radial
And if you use the proper needle bearings for the con rod they can handle even higher loads.
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