TT10 MAX FP
10-23-2012, 05:53 PM
#1
Thread Starter
TT10 MAX FP
WELL HERE IT IS After a new piston and liner , note old davis head finned the screw holes are 90 degrees apart most likely fro a different OS since screw holes for a fore and aft installation note the 45 degree offset but still a perfect fit of insert in cylinder
10-23-2012, 08:11 PM
#3
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RE: TT10 MAX FP
Martin
Many years ago I had an MDS 3.5 cc aero diesel. It's head fins were like that from the factory. I regret trading it. Heavy, but powerful.
The prop wash spirals around the engine. Arguably the orientation of the fins as shown above is, if anything, better for cooling.
Many years ago I had an MDS 3.5 cc aero diesel. It's head fins were like that from the factory. I regret trading it. Heavy, but powerful.
The prop wash spirals around the engine. Arguably the orientation of the fins as shown above is, if anything, better for cooling.
10-25-2012, 06:41 AM
#4
Thread Starter
RE: TT10 MAX FP
well group operation new p/l installed operation a success but patient died
issues
1. engine hard to start need cranking with electric starter, the compression is great can adjust from over to under with screw
2. will run only between 6000-7000, and rough no idle throttle no effect whether 1/4 or 3/4 open
3.the new liner is flanged site on top of cylinder original flush ( davis head still perfect fit notice head sits on flange head not flush up about 2mm my other one is flush
4.Piston new one has a hole about 1/4 inch round below wrist pin, installed with this hole opposite exhaust, slot in cylinder perfect line up with exhaust outlet
5. porting slots were different in cylinder than one that was removed
6.this was a brand new setup in original pack from OS marked 10FP p/l
7.It appears a few varients of this engine 10FP, 10FPS. 10FP b and 10FP BX
8. Ain't breathing right
Ideas????? martin
issues
1. engine hard to start need cranking with electric starter, the compression is great can adjust from over to under with screw
2. will run only between 6000-7000, and rough no idle throttle no effect whether 1/4 or 3/4 open
3.the new liner is flanged site on top of cylinder original flush ( davis head still perfect fit notice head sits on flange head not flush up about 2mm my other one is flush
4.Piston new one has a hole about 1/4 inch round below wrist pin, installed with this hole opposite exhaust, slot in cylinder perfect line up with exhaust outlet
5. porting slots were different in cylinder than one that was removed
6.this was a brand new setup in original pack from OS marked 10FP p/l
7.It appears a few varients of this engine 10FP, 10FPS. 10FP b and 10FP BX
8. Ain't breathing right
Ideas????? martin
10-25-2012, 12:47 PM
#6
Thread Starter
RE: TT10 MAX FP
Mr Cox here it is note 2 pix to show all ports no flange on top just inserts flush with top of crankcase top no port hole in piston below wrist pin
It is worn compression low
It is worn compression low
10-25-2012, 01:24 PM
#7
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RE: TT10 MAX FP
ORIGINAL: fiery
Martin
Many years ago I had an MDS 3.5 cc aero diesel. It's head fins were like that from the factory. I regret trading it. Heavy, but powerful.
The prop wash spirals around the engine. Arguably the orientation of the fins as shown above is, if anything, better for cooling.
Martin
Many years ago I had an MDS 3.5 cc aero diesel. It's head fins were like that from the factory. I regret trading it. Heavy, but powerful.
The prop wash spirals around the engine. Arguably the orientation of the fins as shown above is, if anything, better for cooling.
Nah, Ithink that if angled was best it would have adopted a long time ago.
10-25-2012, 05:53 PM
#10
Thread Starter
RE: TT10 MAX FP
Tried a stunt Bob Davis suggested using a tubing cutter put a thin ring in the piston this of course raised the edge giving a tight fit in the cylinder, was putting in a second one and broke off a piece of the piston skirt gripping it was quite thin had a tape wrap and holding with a plier, too bad think it would have worked to restore compression martin
10-26-2012, 07:08 AM
#12
Thread Starter
RE: TT10 MAX FP
Dennis quite true did not use my head on this one, the piston skirt was quite thin should have put in some plaster shoved in a piece of dowel, as a holder ,let it harden,with then cut the ring , put
in some boiling water to get rid of the plaster, clean, and would have been fine martin
in some boiling water to get rid of the plaster, clean, and would have been fine martin
10-26-2012, 12:00 PM
#16
RE: TT10 MAX FP
ORIGINAL: AMB
Tried a stunt Bob Davis suggested using a tubing cutter put a thin ring in the piston this of course raised the edge giving a tight fit in the cylinder, was putting in a second one and broke off a piece of the piston skirt gripping it was quite thin had a tape wrap and holding with a plier, too bad think it would have worked to restore compression martin
Tried a stunt Bob Davis suggested using a tubing cutter put a thin ring in the piston this of course raised the edge giving a tight fit in the cylinder, was putting in a second one and broke off a piece of the piston skirt gripping it was quite thin had a tape wrap and holding with a plier, too bad think it would have worked to restore compression martin
10-26-2012, 02:30 PM
#17
Thread Starter
RE: TT10 MAX FP
Ok all decided to give this an other shot put on bench,no muffler does not fit due to clamp down nut primed, hit with starter instant light off , died too lean, finely at 4turns open, that is a lot, zinger 8x4 ,10600, then 10,70010,800-10,900 would not hold 11K this is the new p/l will check for air leaks around carb 4 turns out alot or just a querky cab bot now a happy camper with this beast, compression awsome martin
10-26-2012, 02:39 PM
#18
Thread Starter
RE: TT10 MAX FP
control liner just checked the label that was on the OS 10 liner #21303000 and reads 10FP top flange on liner thats what in the engine and it works martin
see above post
see above post
