HF 79cc to replace HS 49cc in the "Black Ale"

scotto-

scotto-

Custom 4-Stroke Bike Builder
This is one of my first 4-stroke builds and the engine has 20,000+ miles on it and still runs strong. The only reason for the new engine transplant is that I'm re-building it for one of my sons and he is bigger and has hill's to tackle where he lives. Here's some pics.....











And yeah I know Aleman......but sometimes bigger is what's required cuz not everyone is a peddalin' fool.
 
will the 99 cc HF fit upright in that frame?
Just asking, i know it's an easier and cheaper install to do it on the kit mounting plate.

Is your son going to race it on the track? Father - son racing team?
 
MotorBicycleRacing said:
will the 99 cc HF fit upright in that frame?
Just asking, i know it's an easier and cheaper install to do it on the kit mounting plate.

Is your son going to race it on the track? Father - son racing team?
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Yes the 99cc will fit upright in that frame, but i'm going to mount it slanted.

I doubt my son Neil will be racing it, but ya never know! Yes I have a son named Neil, but he's much cooler than you or I laff
 
Got a little bit more done on the bike today but still plenty more before it's motor driven......











bolting up the tranny next......
 
Nice job! I think I get drunk watching the latest pictures of Black Ale because every time I look at them, my vision becomes blurry;)

Chris
AKA: BigBlue
 
BigBlue said:
Nice job! I think I get drunk watching the latest pictures of Black Ale because every time I look at them, my vision becomes blurry;)

Chris
AKA: BigBlue
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That's funny Chris but it's not you....it's just my crappy camera work and my life is a blur rotfl

do the cranks clear the motor?
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just barely.....

dnut
 
This set-up is still using the stock 170mm alloy cranks and the wide sealed cartridge bearing bottom bracket from Sick Bike Parts and they do clear the 11" wide 79cc HF Predator engine with EZM tranny.











This build is nearly complete.....once again .
 
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GearNut said:
That is looking really nice scotto!
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Thanks Dan, was able to take it for a test ride yesterday and it cruises nicely! Still have to install an air filter, proper throttle cable, rear brake and a front engine mount. Then it's the little things like a proper sparkplug, dialing in the carb, routing and securing the cables and stuff like that.









Hope my son likes his new/old Christmas present ;)
 
Oh, I think he will more than like it.

With your vast experience with the HF engines, may I ask a question...
Are those 99/ 79cc HF engines really that much better at climbing hills than the HS142's?
As everyone in the group ride (way back when) found out, I really don't care much for top speeds. I live in hill country. Torque is what I strive for. I really don't want to gear down for it though as a decent top speed of 30 or so is also desired.
I guess I am trying "to have my cake and eat it too".
 
That bike looks very good scotto, I have two of the older Greyhound HF 79cc engines sitting new in the box, and seeing this build sure makes me want to get one of them rigged up on a bike......

Map
reddd
 
GearNut said:
Oh, I think he will more than like it.

Are those 99/ 79cc HF engines really that much better at climbing hills than the HS142's?

I guess I am trying "to have my cake and eat it too".
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Yes they are.....much better. The 79cc is made so you can have your cake.....and climb up it too!

curtisfox said:
What carb are you running on that engine?

Awesome bike ...................Curt
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It's the 19mm carb that AGK sells.......a chinese mikuni type knock-off.

Workin' on the rear brake and waitin' on a throttle cable......

dnut
 
Just an update while waiting for a couple more parts.......a little pictorial so too speak.....









....and there you have it, that wasn't too bad I hope?

dnut
 
scotto

acknowledge your cleaver use of the cast piece to make your forward engine mount --bravo!!

I hope others note and follow your example
 
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