Kasama Stuff for the Trex500

[alf_flash]

Hello,
Should i tight all the way up the Kasama tail grips, and expect them to run smooth ?
Or should i tight a little and then a little more and check were they feel smooth ?

The only way to make the grips run smooth is not applying to much force when tightening... Is this safe ?

god Bless
Thank you !!!

[Finless]

You tighten them up as tight as you can but NOT too tight to make the bearings feel notchy!!!!! This is important and you check them from time to time!

Bob

[brian94066]

seems VERY high quality

hope kasama makes the whole head for the 500 :YeaBaby:

[HEIM JOINT]

Custom CWM bolt and nut that are accurately tuned to the Kasama grips and KBDD or CF blades. PM me if you are interested in a set.

[alf_flash]

Hello Bob, im really thinking on buying the Chinese Weight Mod offered by Heim Joint... I have already pm with him and his attention is superb. But what do you think about his product ?
Thank You
God Bless

[brian94066]

how about doing a review on it

[Finless]

I would have to try the product to tell you. In the end it's how much weight to not over balance the grips. I cant tell by just looking at the picture. It looks good though!

Bob

[HEIM JOINT]

I would have to try the product to tell you. In the end it's how much weight to not over balance the grips. I cant tell by just looking at the picture. It looks good though!

Bob

Bob, I know you get a lot of PM so I am not complaining but I sent you an offer to try these a while back. The offer still stands. Just PM your address and I will send you a set to try out. these are designed to minimize the additional weight by concentrating the weight further out from the feathering axis. They are tuned by testing at speed with a digital force gage on the pushrod. See post #1 of this for a video of the testing
http://www.helifreak.com/showthread.php?t=78453&highlight=chinese+weights&page=6

I have them for T500 Kasama T500 stock and Gaui 200 stock or Microheli. let know which ones you want to try out.

Thanks, HEIMJOINT

[Finless]

Hmmm, I don't remember getting a PM? I get a ton of PM's as you can imagine so I must have missed it.

PM Sent!

Bob

[HEIM JOINT]

Hmmm, I don't remember getting a PM? I get a ton of PM's as you can imagine so I must have missed it.

PM Sent!

Bob

They are in the Mail :)

[brian94066]

WHOO!

can't wait

[HEIM JOINT]

WHOO!

can't wait


Check this out while you are waiting
VIDEO OF THE TEST AND THE CHINESE WEIGHT SCREW AND NUT
http://www.youtube.com/watch?v=XWkQGFaArzg (http://www.youtube.com/watch?v=XWkQGFaArzg)

[Finless]

NICE tests man! Very thorough and scientific!

Looks to be a good setup. As you know I have modded my kasama tail with just extra nuts but there are still some forces. Not near as much without them but some still there meaning, I still did not have enough weight BUT it sure did help.
Cant wait to try these THANKS!

Bob

[brian94066]

i never thought the chinese mod would make such a difference

companies need to incorporate it in their designs

[HEIM JOINT]

NICE tests man! Very thorough and scientific!

Looks to be a good setup. As you know I have modded my kasama tail with just extra nuts but there are still some forces. Not near as much without them but some still there meaning, I still did not have enough weight BUT it sure did help.
Cant wait to try these THANKS!

Bob

I think you will find that the my bolt and nut set probably weigh close to the same as your mod. but the center of gravity of the weight is moved out further from the feathering axis which is more effective. That is the purpose of the thin neck and flange on both the bolt and nut. to move the CG of each out further.

Robin

[alf_flash]

I couldnt wait !!! i have bought my CWM upgrade !
Cant wait to receive them
God Bless

[Aberdeen]

I order 3 sets for my t 500's, and was totally floored with the performance!:shock:
Also, I was very impresses with the fit and finish of Robins product!:thumbup:

A must buy item!

Great work!


Anthony

[HEIM JOINT]

NICE tests man! Very thorough and scientific!

Looks to be a good setup. As you know I have modded my kasama tail with just extra nuts but there are still some forces. Not near as much without them but some still there meaning, I still did not have enough weight BUT it sure did help.
Cant wait to try these THANKS!

Bob

Bob, I have improved the chinese bolt and nut after I sent you the samples. One drawback was that you had to wait for the loctite to cure before you flew. I had a brainstorm and realized I could make them like a flexlock self locking nut. so the picture shows a standard flexlock self locking nut with its triangularly shaped grip area in front of the Kasama Chinese bolt and nut with the indentations where is has been made triangular to be self locking. You will still use loctite but you will be able to fly right away. The drag torque is similar to a nylock. All The T500 Kasama Chinese bolt sets now have this feature. And I will send you another set so you can try this also.

Thanks for trying these, Robin (HEIMJOINT)

[Finless]

Got the sets yesterday in the mail. I don't mind the locktite so no need to send again unless you feel it is necessary. I am leaving for a 5 day vacation and wont be back until Thursday.

Bob

[alf_flash]

Hello Bob, well finally i had time to install the Chiese weight mods i bought from Robin in heim joint, and after finalizing the installation i noticed i had a big big slop in the kasama grips, the curios thing i that the slop is not up and down, this is a little bit difficult to explain but i rechecked the nut and its tight and the bearing and grips runs very very smooth, but i have a lateral slop from right to left and left to right, am i explaining my self ?

Im not sure of this because i havent noticed after, but maybe its normal and i was not aware of it... Can you help me ? My grips are 3 flights used and the installation is correct. Well at least i think it is.

Thank you once again for all the help you provide us with, and your superb attention !
God Bless
Alfredo

[freefall]

When doing the weight mod do you put the blade grip bolts on the same way or reverse one to keep things balanced.So bolt head on one bolt and nylock on other bolt are on same side of grips?

[Finless]

HUH? Not sure what your asking?

Bob

[HEIM JOINT]

Bob, Have you had a chance to try the Chinese weights that I sent you?

Thanks, Robin

[freefall]

Bob,Hard to explain.I would imagine that the bolt with the 2 steel nuts and nylock nut would be biased towards the nylock end."IF" this is the case would you need to have the bolts inserted opposite it grips.
So looking at the grips face on you have a bolthead on one grip and a nylock on the other facing you.
What i mean is if the bolts are heavier at one end,nylock end say, would having both on same dics side effect ballance at high revs.

I have made a quick sketch,the second picture on the right is bolt head and nylock placement.If the sketch does not show i have made a mistake with the posting method!

[HEIM JOINT]

Bob,Hard to explain.I would imagine that the bolt with the 2 steel nuts and nylock nut would be biased towards the nylock end."IF" this is the case would you need to have the bolts inserted opposite it grips.
So looking at the grips face on you have a bolthead on one grip and a nylock on the other facing you.
What i mean is if the bolts are heavier at one end,nylock end say, would having both on same dics side effect ballance at high revs.

I have made a quick sketch,the second picture on the right is bolt head and nylock placement.If the sketch does not show i have made a mistake with the posting method!

freefall,

Having the both nuts on the same side of the rotor disk is what you want. If you have them opposite you will be causing a dynamic imbalance that will cause vibration.

A separate but related issue is, IMO it is best to have the heavier end (typicaly the nut) on the boom side of the grips. This helps to counteract the bending load on the grip bearings caused by the aerodynamic force on the blade. This force is pushing the blade toward the boom the majority of the time counteracting the main rotor torque.