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LT racers
09-02-2007, 07:46 PM
looking to convert Blaster to 80cc engine need HELP

ryansblaster
09-03-2007, 10:01 AM
i don't know about that but quadjunkies made one with a cr85 engine

StrokedTater240
09-03-2007, 07:07 PM
the problem with 80cc engines in quad frame is the fact that they have no low end or much torque.the clutches and other parts in the bottom end were not designed to handle all the weight.not saying it cannot be done.but without alot of engine mods i would not expect it to be very trail friendly.

QuadJunkies
09-04-2007, 12:43 AM
StrokedTater240 is correct on the bottom end issue and the CR's bottom end is somewhat weak ,but you can fix that up abit. you will want to beef it up .... ;)
But trail freindly -sure!
My Daughter races hers in the WORCS Series and does just fine in the XC sections. :)
My Daughters motor started out as an 80 and is now about a 91cc,we had alotdone to make the motor handle all the extra weight (our back up motor is an 06 and will be a 101 this winter ) We have raced with other Blaster hybrids and they get up and GO!
:macho
You will want to "pep" it up abit but yes, it can be done and can be very competitive.
My Daughter loves hers. Just do your homework, its abit of work to custom build .

StrokedTater240
09-04-2007, 02:43 PM
another thing you guys may want to consider is rider weight.also tha mount of work and money you are getting into.vs. modding the stock engine.

QuadJunkies
09-05-2007, 12:15 AM
Yes^^.
How old is the rider BTW??
When we considered ours, we couldnt pass up the deal(even with all the work we had to sink into itto re-build it,it was used )it was still cheaper than to buy a new full blown quad from a race company.the motor wasnt no more to build than it would have been to buy one new and then rebuild it to support the weight of the quad chassis-it a few thousand less actually.
The mini is actually lighter than we thought it would be also.
Theres lots of these little screamers out there and they do well when put together well.
MY Daughter only weighs 110 lbs. This quad keeps her in a class she can race in until shes old enough to move up to the womens class. :)

QuadJunkies
09-05-2007, 12:19 AM
heres what hers looks like
http://www.pbase.com/image/75798633/large.jpg
http://www.pbase.com/quadjunkies/image/75798627.jpg
http://www.pbase.com/quadjunkies/image/83420230.jpg
http://www.pbase.com/quadjunkies/image/80815321.jpg

newnick
09-05-2007, 06:42 AM
QJ is correct, there are many hybrid quads. The latest ones are using the new 150 Honda 4 stroke dirtbike motor.

QuadJunkies
09-05-2007, 10:17 AM
Originally posted by newnick
QJ is correct, there are many hybrid quads. The latest ones are using the new 150 Honda 4 stroke dirtbike motor.

Were thinking on that motor for next season if I can find a deal on the motor and an extra frame.:cool:
Were still working on getting even more bottom end out of our CR,but right now its pulling close to 27 ponies the way its built now.

newnick
09-05-2007, 12:47 PM
That's a good amount of power, even compared with a modded Blaster motor.
The pics look good, looks just the right size for your daughter. My boy is still not as aggresive on the Blaster as he was on the mini, but he did finally get a trophy at the last race which isn't all that bad. He's racing against some faster more experienced kids. There are two hybrids in his class most of the time. One is a Hetricks 150, the other is a freind of ours son with a 400ex/150 that he built himself. It's a really nice machine that they're still working on getting tweaked out just right.

QuadJunkies
09-06-2007, 12:16 AM
Originally posted by newnick
That's a good amount of power, even compared with a modded Blaster motor.
The pics look good, looks just the right size for your daughter. My boy is still not as aggresive on the Blaster as he was on the mini, but he did finally get a trophy at the last race which isn't all that bad. He's racing against some faster more experienced kids. There are two hybrids in his class most of the time. One is a Hetricks 150, the other is a freind of ours son with a 400ex/150 that he built himself. It's a really nice machine that they're still working on getting tweaked out just right.
Kelseys isnt as much on her's either . That is ... in MX form .She could realy hug her mini and huck it HUGE ,on the Blaster,its taking her a little more time .She has struggled where to keep the power. Else shes over revved or under. She is a very lazy shifter and is not good at 2nd gear starts. She will get it in time..
She has got alot faster though and is better at XC and the rougher,wooped out stuff . My son is the complete opposite. lol
With the power to weight ratio, its work well for her .:)

motoxgirl419
09-17-2007, 05:32 AM
We have a Blaster chasis with a CR80 motor in it, and we love it. My daughter loves it as well. She is just learning the whole shifting process right now, so isn't the fastest kid out there. But everytime she rides it she gets better.
We couldn't pass it up when we bought it. It was pretty much all done up and we just changed some things around and then added our own look to it. We added new plastic, nerf bars,graphics, frame work and powdercoating, handlebars, bumper, seat and cover, radiator,Janssen long travel a-arms and Axis shocks to make it alot softer, etc. Even with all the work done on it and the money that was spent, it's a great quad.
Will add some pics tonite.

motoxgirl419
10-05-2007, 08:02 PM
Here are some pics that I have been wanting to get on here, finally. We took these pics the day we got the bike from the shop. We have installed the nets on the nerf bars and changed the handlebars.


http://img63.imageshack.us/img63/8053/dscf2425ak4.jpg (http://imageshack.us)


http://img218.imageshack.us/img218/9588/dscf2426ig3.jpg (http://imageshack.us)


http://img218.imageshack.us/img218/8828/dscf2428hk8.jpg (http://imageshack.us)

blaster99
10-06-2007, 09:43 AM
thease are all exrtreamly well built hybrids. the only reason i thin for one is the 90 mod class. i wouldent take on of those out onto the trail.

quadjunkies, is 27 hp at the wheels? becasue thats more than a fully built blaster motor at the wheels.

QuadJunkies
10-06-2007, 11:23 AM
Originally posted by blaster99
thease are all exrtreamly well built hybrids. the only reason i thin for one is the 90 mod class. i wouldent take on of those out onto the trail.

quadjunkies, is 27 hp at the wheels? becasue thats more than a fully built blaster motor at the wheels.
That I am not sure of .. That was what our motor builder quoted us when building the motor.Ill have to ask him again. :)
As for compared power, her motor was completely rebuilt and several upgrades were done and it is now a 90 motor.Everything was changed ... I done a topic on it once with all that we had done to it.
Alot of these Hybrids can actually hang quite well with some of the built blasters. The onlything we had done to hers that we are wanting to change now is it had too much top end and not enough low. When her BB gets installed on the new motor ,we will be mamingafew changes there. This year the motor is somewhat experimental to see how it does a full season runing a cross country season.
When we actually have some free time, Im going to put both our minis on a Dyno just to see for myself what they are pushing.The I wish I had done that to our 116 CVT we had before we sold it ,that would have been very impressive to see. :cool:

Were now looking for a frame so that when the time comes to cut and modify,a bigger motor is going to be installed .

Jake250ex
10-07-2007, 11:05 AM
^ holy crap what kinda shocks are those?

If you werent racing, I think a yz125 motor would be a good choice too!

QuadJunkies
10-07-2007, 11:45 AM
Originally posted by Jake250ex
^ holy crap what kinda shocks are those?

If you werent racing, I think a yz125 motor would be a good choice too!
On my Duaghers mini?? They are Elkas on LEager 400ex style front end. There is actually alot of 400ex components on here...
We have some 124's that race in her class, we have actually been thinking of going that route, I just worry about how much the frame will need to be modified and what all the vibration will do to it . lol:p so basically, longevity .
I almost wonder how a 400ex frame would work for another Hybrid. Its got great ergonomics, I think its all goign to barrel down to weight.

QuadJunkies
10-07-2007, 11:48 AM
Originally posted by motoxgirl419
[B]Here are some pics that I have been wanting to get on here, finally. We took these pics the day we got the bike from the shop. We have installed the nets on the nerf bars and changed the handlebars.




That turned out really nice!! :cool:
hows her season been on it?

85and93
10-11-2007, 05:00 PM
heres my brohters yz80

<a href="http://photobucket.com" target="_blank"><img src="http://i19.photobucket.com/albums/b168/mxdustinmx/QUADPICS003.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>

blaster99
10-13-2007, 06:13 AM
Originally posted by QuadJunkies
On my Duaghers mini?? They are Elkas on LEager 400ex style front end. There is actually alot of 400ex components on here...
We have some 124's that race in her class, we have actually been thinking of going that route, I just worry about how much the frame will need to be modified and what all the vibration will do to it . lol:p so basically, longevity .
I almost wonder how a 400ex frame would work for another Hybrid. Its got great ergonomics, I think its all goign to barrel down to weight.

a 125 might be too much vibration. blaster frames are kinda weak. we break them all the time.

QuadJunkies
10-13-2007, 08:37 AM
Originally posted by blaster99
a 125 might be too much vibration. blaster frames are kinda weak. we break them all the time.
They are alot of vibration, but we actually race with a couple of them on our track that seem to be holding together pretty nicely.
Nothing a few extra reinforcemnts cant fix! :D lol

Im yet to see a frame that isnt weak :ermm:
I think with any of these Hybrids, your going to see some extra welds .

[R]iders!KB
02-21-2008, 11:58 PM
is a 80cc engine any good in a blaster? y do so many ppl do it? its a much smaller engine but is the speed still ther? i dnt really understand it much lol can someone give me some feed back?

85and93
02-22-2008, 05:57 AM
my dad build it for my brother to get use to a clutch and race in the mini class with it.

Modifly
02-22-2008, 11:41 AM
why was my post deleted :rolleyes:

fcfab
02-22-2008, 12:44 PM
A Cr 85 motor is smaller then the blaster but well produce more power in mid and top end. If you have a kid that well let it rev the cvts have no chance, thats why theres a shifter class. the problem with the blaster is the overall weight Keep the wheels and tires light, to help with unsprung weight.

If you want more power.
Carey
Fc Fabricating
Custom built Cr 85 Shifter
Trx 250x
Trx 350x

QuadJunkies
02-25-2008, 10:48 PM
After the racing season is over, my Daughters Hybrid will get a
re-fresh and then up for sale this fall if anyone is looking for a built mini this fall.It will also have a 101cc motor to go with it for a back up motor.
She is moving up to the Womens class next season so we will be selling.