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HomeAircraftHelicopterThunder TigerRAPTOR 90 › need some tope dragon rotor head info
02-10-2008 07:19 AM  10 years agoPost 1
FenderBean

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Fort Hood TX

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buddy of mine bought one and I was wondering about his instructions, they show just the grip bearings and thrust bearings going onto the shaft. My raptor 90 standard I had all kinds of thrust washers, one between thrust Bearings and main bearings and two between the grip and rubber damper. Are his instructions right? do u not use all the washers in the top dragon head? He said when he does it like the instructions the feathering shaft is not flush with the end of the thrust bearings. Almost like the feathing shaft is two short. If anyone has put one of these together throw in some info.

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02-10-2008 02:55 PM  10 years agoPost 2
bosshoss

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Chicago, IL

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Is he using the plastic grips or the TD grips?

He may have to experiment with shims between the Thrust and sealed bearings to get it right.

THe see-saw on the TD head is the same way....I had to remove material from the spacers in the bearings to get no slop....Heliproz even suggested it.

Custom fine tuning/fitting is the norm.

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02-10-2008 04:13 PM  10 years agoPost 3
FenderBean

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Fort Hood TX

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TD ones

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02-10-2008 05:43 PM  10 years agoPost 4
bosshoss

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Chicago, IL

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A call to HeliProz is in order. THey are the Top Dragon experts....

I basicly had to machine ,and custom shim mine to get it as perfect as I wanted it. ( the TDR See-saw setup, that is).

But, pitch those TD grips....IMO, and many others, the TDR head, with plastic grips is best.

Heck, I have a set of TD grips I will sell you cheap. Never used them, ever.

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02-10-2008 08:07 PM  10 years agoPost 5
FenderBean

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Fort Hood TX

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well that makes me mad what was the point in the head then if its crap. "its the best head we carry" heliproz said arggg

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02-10-2008 08:30 PM  10 years agoPost 6
Ken Filloon

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Highland, Michigan

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There is nothing wrong with the head or the grips. I have been flying them for 3 years now.

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02-11-2008 12:49 AM  10 years agoPost 7
bosshoss

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Chicago, IL

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I am not sure what the perceived problem is with the TD grips, I probably wouldn't notice wither. But, I know that the plastic grip are easier on the head in a crash, in fact, my head survived my really hard crash, only broke a plastic grip. The seesaw was fine, FB cage was fine, mixers ok, bolts bent.

I was tempted to put the TD grips on it, I got them with the heli, with the grips changed out to plastic.

But, I bought new plastic ones, and left the TD's for another crash.

All I had to do with my TD see-saw was hone 0.0015 off the bearing inserts to get rid of the back and forth slop.

I suspect you may have to "adjust" or move shims about to get the spacing right. I have washers next to my dampers on my TD. And a washer inbetween the thrust and outer bearing. Thin one inside , thick one outside..

Let me check. ...

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02-11-2008 12:53 AM  10 years agoPost 8
bosshoss

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You know I have the grips right here, both plastic and the TD , I will measure the races' depth and compare.

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02-11-2008 01:10 AM  10 years agoPost 9
bosshoss

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Chicago, IL

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OK,

the TDR grips are cut DEEPER on the outside....and cut SHALLOWER on the inside.

I got .422 on the outside and .190 on the inside.

plastic...... .414 and .193 ,,,,but I might be measuring from points that don't matter, either.

If I could measure the block inside, with reference to the inner bearing surface , that would be better. ......

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02-11-2008 03:16 AM  10 years agoPost 10
FenderBean

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Fort Hood TX

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I looked at the instructions for the TD head and it does not show any shims.

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02-11-2008 11:40 AM  10 years agoPost 11
jsenicka

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Eagle River, WI

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TDR head with the TDR dampers does not run any shims between the grips and dampers.

Jim Senicka
Team Manager, GrandRC Flight Team

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02-12-2008 02:56 AM  10 years agoPost 12
FenderBean

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Fort Hood TX

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okay i guess ill call heliproz since another person told me to put the shim between the bearings and thrust bearings

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02-12-2008 04:18 AM  10 years agoPost 13
Ken Filloon

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Highland, Michigan

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Its not a shim, its a thrust washer page 22 in the manual number 8.

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02-12-2008 11:15 AM  10 years agoPost 14
jsenicka

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Eagle River, WI

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BK0477 on page 24 of the R90SE manual is not a "thrust washer". It is a 2mm thick spacer. TT also supplies some very thin (.4mm)additional spacers of the same ID/OD to tweak the spacing. You do not run BK0477 or BK0703 spacers with the TDR head

The "thrust collar" is BK0325 on page 25 of the R90SE manual.

Jim Senicka
Team Manager, GrandRC Flight Team

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02-12-2008 03:51 PM  10 years agoPost 15
FenderBean

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Fort Hood TX

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okay know we are getting some where, I got the fact you dont use # 14 and 15 (BK0703,BZK0477) What about #8 (BK0325) this is one i was wondering about the thrust washer.

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02-12-2008 07:02 PM  10 years agoPost 16
Ken Filloon

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Highland, Michigan

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Yes, use the thrust washer.

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02-12-2008 09:57 PM  10 years agoPost 17
FenderBean

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Fort Hood TX

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okay thanks

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