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Can't argue with those micro-helicopters: I got one for xmas and it's just too cool! You don't have to wait for decent weather coz it will fly indoors, I've crashed it loads of times and it is yet to break, and it recharges in 10 minutes!
 
Hello,
Done work until Jan01 at 1600 then off to San Francisco. The r/c airplane in the garage is one of many. I have a couple of beautiful p51 mustangs the old boys at my field love them. They look great in the air. My r/c passion is for helicopters, I have a basement full of them; however my attention for the last couple of years has been directed to my sprite. My wife likes me working on my sprite; it is a hobby that she says has a purpose, something to pickup groceries etc with. My sprite is cheap compared to flying r/c helis often a single crash cost $1000.00 plus.
Removed the pistons today, still std size they look ok, will mic them for size. Going to do rings now that it is a part. The head looked ok, the casting number 12G295 is a good head according to Vizard. So I guess I will pull the head a part to. So much for the quick cheap rebuild. Hap may have to wait a little longer before I send him any 1275 parts
Phil
 
I new this would happen. I stripped the block, the block and head are at the machine shop. Having the block checked and honed, the head is also going to be checked and a valve job done. The std pistons look brand new and he will mic and check everything for me. The crank is being reground and I gave him Hap’s tolerances, he assured me he would get it done to my satisfaction. So new rings bearings, purchased a new old stock oil pump off of eBay. So much for the economical rebuild. Now thinking maybe I should sneak a new cam in there.
Still sticking to my original plan to build a 1275, but I love the sound of a smooth running engine.
Phil
 
Phil, you'll be very happy with the 1098. It has plenty of grunt, (Relatively speaking, of course. :G) and as long as you don't try to rev it to the moon, you should be fine.
I love the one I built for my '65. It's propelled me all through the Northern California mountains with nary a hiccup in 30,000 miles.
Jeff
 
Thanks Jeff,
just curious what cam did you go with, i noticed the KN filters on the eng photo, where did you get them from
In fact what did you do to the 1098 to get 92hp.
Phil
 
Phil, I used an SPVP3 cam from APT, with 1.3 ratio forged rockers. The K&N's came from APT, too, as did many of the components. The rods were lightened and polished, .040" overbore with flat top pistons set to zero deck height, wedged crank, port work, 10.5:1 compression, new, tweaked HS2's, double row timing chain with a 1275 balancer, the list seems endless. Of course, everything was balanced to within half a small hair.
After the initial 1000 miles or so, 7000RPM shifts were the norm, and it would pull hard up to about 7300 if I asked it to.
It's got about 30,000 trouble free miles on it now, and shows no sign of going off song.
Cheap? Not by any stretch of the imagination. Fun? OH YEAH!! /bcforum/images/%%GRAEMLIN_URL%%/thumbsup.gif
I've embarrased a lot of other vehicles with it. The suspension has all been replaced with new springs, shocks, urethane bushings, etc. to make the entire package into a sweetly performing and handling car. Next comes the cosmetic portion, as I would like to repaint it back to its original black instead of the John Deere'ish green it is currently. Strangely enough, Black was supposedly not offered on the Sprite in '65, only the Midget, but mine shows all the evidence of black being it's original color.
One of these days I'll get a Heritage Certificate for it.
Jeff
 
Jeff Thanks for the info,
It is a good thing I am very focused at work, never any trouble making a plan and sticking with it. In fact everything I do is planed, now I find my LBC has changed all that. Well for now I will stick to the 1275 idea but I really like your motor. The best part to me is it is the original motor. Not sure why that matters, I am not selling it and really do not want stock wheels etc.
Phil
 
Phil, I love the originality side of things. Yeah, I've hotted mine up a bit, but it's all been done with things that were either available from the factory, or are period authentic. Heck, I still run a generator, positive ground.
My only concession to modernity is the addition of the Minator aluminum wheels and Sumitomo 175-70-13 tires.
Jeff
 
That's funny I have left the car positive gnd and still use the gen. So far my only change is the wheels and tires. Sound familar
Phil
 
That is why we own LBC's

Jeff, what muffler did you go with. I keeep looking at the Monza 6-402 in VB cat, I have a header that I purchased along time ago, it is not great as it is a 3 in one but since I have it might as well try it.
Phil
 
Phil, I'm just running the single box Falcon stainless system muffler for now. In my experience the Monza will rust out in very short order.
I see a Flowmaster in my future.
Since the car is in California, and I'm stuck in Michigan, it makes it hard to do the upgrades I want!
Jeff
 
flowmaster-where do you find that muffler, never heard of it
going to LA Sunday morning, just there for the day
Phil
 
ok just looked at flowmaster website, did not see anything for midget/sprite have you heard a sprite with this muffler
Phil
 
Phil, here's the link to Flowmaster:

https://www.flowmastermufflers.com/

Summit sells them, among others. I've got one here for the race car, and I need to pull the part number from it and get another one.
I've a friend who is the VP for Engineering at Arvin-Meritor, who make the Dynomax mufflers. He races a Formula Continental, and is running a neat muffler that they developed. I plan on getting one from him and trying it out, too. I'll use my '72 here as a rolling test bed.
Have fun in LA! /bcforum/images/%%GRAEMLIN_URL%%/pukeface.gif
Jeff
 
MCS said:
ok just looked at flowmaster website, did not see anything for midget/sprite have you heard a sprite with this muffler
Phil
Click to expand...

Only the race cars, Phil. I'd contact them and see what they have. They can probably just weld in whatever size inlet pipe you want on one of the smaller mufflers, such as a 10 series.
Jeff
 
Jeff maybe I will call them next week
Time to turn off the computer, as it is 2100 miles to LAX at mach .78 it still takes 5 hours
Cheers Phil
 
update
Spoke to the machine shop yesterday. The news was not what I had hoped for. The head needs 4 valves and 3 guides plus it needs to be resurfaced.

The block is even more disappointing. I guess I had the engine re sleaved about 30 years ago. The pistons and bore looked perfect. The problem is the piston clearance is over 5 thou. That is way out of limits. The rods are also out of round and need machining. Then the usual crank grind bearings etc. The cam is ok but needs cam followers etc.
Two questions.
1.Can I just re ring the pistons and get away with that much clearance.
2. Or should I just jump into the 1275 engine. I did take the 1275 to the shop today, he is going to clean and mic everything for me, then it will be time to make a decision.
As I had said in an earlier post my intention was to build a 1275 slowly and drive the 1098 for the 2008 season.
Phil
 
Sounds like it is time for the 1275. Actually the cost will be the same for either.
 
Phil, start on the 1275 now. You're beating a dead horse to sink the same amount of money in the 1098 just to drive it for the interim.

Jeff
 
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