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Old 03-06-2018, 03:14 PM   #41
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Default Re: Yeti.stealths RTR Twin Hammers

Glad I could help!

Mine was done in a bit of a rush with a lot of guesswork! But it turned out ok’ish.

Moving on to my motor and esc, the only motor I could get locally was an HPI firebolt 15T, it didn’t run well right from the start, got hot quickly, ran way faster and cooler in reverse but ultimately has burnt out already, I have given up on brushed motors for the TH, it will definately be our fast basher/fun/trail rig now so I’m going brushless.

Just discovered the waterproof castle sidewinder SW4, guys are singing it’s praises over in the electronics section and it’s incredable low end sensorless smoothness. Ebay have some seriously cheap china brushless motors that would put this within my RC budget, I’m thinking about a waterproof 10.5t ( 3600kv ) would that be about right you think? It will be for fast 2s running, sometimes sand dune jumping, maybe some 3s madness too!
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Old 03-18-2018, 03:28 AM   #42
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The TH took another beating today, the rtr esc can handle 3s but the 15t brushed motors sure can’t!

We decided we could live without our Losi 22 buggy, but not without our Twin Hammers! So I have temporarily transplanted the hobbywing 10bl60 esc and Lrp 17.5T brushless motor with 30T pinion, it’s pretty conservative, very similar to the stock rtr brushed set up on 2s and 3s. Running it on 3s is plenty fast enough for my boy, can even pull wheelies on the driveway still with the battery in the tub!

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The gmade shock are working great, no big leaks yet, but the gmade oil is not silicone shock oil, it’s like regular gear oil, the shocks smell after a run, I hate the smell of gear oil!

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The Losi 22 buggy will have to sit on the bench until the TH gets its own heart.

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Old 03-18-2018, 03:40 AM   #43
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Default Re: Yeti.stealths RTR Twin Hammers

He is the 3s soft pack I used today, it use to power my foam Corsair warbird ( R.I.P Corsair.....R.I.P. )

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Goes in the same way as a 2s shorty hardcase pack.
Fits like a glove.

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Driver figure almost got ‘ the Stig ‘ look going on, the Stig approves of 3s power!

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Old 03-18-2018, 03:45 AM   #44
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Default Re: Yeti.stealths RTR Twin Hammers

Hobbywing esc, brushless 17.5T sensored motor, 30t pinion, good enough for now. Hope the plastic RTR gears hold up.

Gear shift seems to be seized up a bit now, next project will be trans tear down and see what’s going on with the shift mechanism...

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Old 03-19-2018, 05:31 PM   #45
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Default Re: Yeti.stealths RTR Twin Hammers

Quote:
Originally Posted by Yeti.stealth View Post
Hobbywing esc, brushless 17.5T sensored motor, 30t pinion, good enough for now. Hope the plastic RTR gears hold up.

Gear shift seems to be seized up a bit now, next project will be trans tear down and see what’s going on with the shift mechanism...

Attachment 370495

Attachment 370496
One of my twin hammers did the same thing. Ended up being dust worked it's way in between the shift rod and shift rod hole. It mixed with the grease and made a nice sludge to of course cause the shift rod to bind.

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Old 03-19-2018, 11:40 PM   #46
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Default Re: Yeti.stealths RTR Twin Hammers

Thanks for the tip!

It seems to shift OK at first but will bind up after some run time, it will shift every time into low but gets jammed shifting into high.

All I have to do is press lightly on the shift rod to get it fully into high, pretty easy access with my magnetic removable driver figure.
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Old 03-20-2018, 05:22 AM   #47
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Default Re: Yeti.stealths RTR Twin Hammers

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Originally Posted by Yeti.stealth View Post
Thanks for the tip!

It seems to shift OK at first but will bind up after some run time, it will shift every time into low but gets jammed shifting into high.

All I have to do is press lightly on the shift rod to get it fully into high, pretty easy access with my magnetic removable driver figure.
Sounds like what mine was doing though your servo could be getting weak also.

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Old 04-05-2018, 03:58 AM   #48
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Default Re: Yeti.stealths RTR Twin Hammers

Upgraded to metal gears in the gearbox, in preparation for new brushless set up.

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Old 04-05-2018, 04:08 AM   #49
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Went with a bit more of a budget friendly hobbywing sensored motor and esc, 10.5 turn motor.
Motor had some rear facing plug in terminals that were just touching the steering servo so I unsoldered them and slotted the terminal so I could run the wires forward.

Pretty happy with how it runs on stock gearing, plenty fast enough for us just on 2S, it will really fly on 3S!

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Old 04-05-2018, 06:00 AM   #50
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Default Re: Yeti.stealths RTR Twin Hammers

That's a good set up. I think you will be happy with it. I'm planning on getting one of those for my 1.9 wraith again I will be building soon. Looking forward to your test to see how it works for you.

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Old 04-10-2018, 05:10 AM   #51
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here is a kid enjoying the Twin Hammers!

I think it scoots along on the sand pretty darn good as is, in this vid its still only got the 17.5t motor, but in my sons expert sand driving opinion, he says it needs sand paddles on the rear!

we cant wait to hit the sand with the 10.5t motor! 2S is great with the new motor and we have run it once on 3S now and its a screamer! i think it will do wheelies on the sand with paddle tyres!

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Old 04-22-2018, 02:26 AM   #52
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We have had a bit of run time with the new motor and ESC now, its fast, damn fast on 3S! Too fast really for the chassis/suspension, pretty easy to get out of shape as it wallows around on the suspension haha.

Having said that, on the sand it was awesome!!!!

I was able to test out a buddies HPI sand paws borrowed off his slash and i'm hooked on paddle tyres for the sand, and the sound they make!!!! YEAH.


3S POWER! one wheel dougnuts with RTR tyres.
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Tearing up the sand with paddles!

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Old 04-22-2018, 03:11 AM   #53
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Im on the hunt for some paddle tyres now, I like the look of the Vaterra Glamis Uno paddles and the plastic beadlocks they go onto, but does anybody know the diameter of these tyres? are they similar in size to the TH RTR tyres?

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Old 04-22-2018, 03:38 AM   #54
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These look good too, Sling Shot SC 2.2"/3.0" Tires.

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The specs on Prolines site state 115mm diameter, thats very close to the RTR tyre size. I can live with a few mm difference.

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verniers set to 115mm

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Old 04-22-2018, 05:20 AM   #55
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Great stuff, you guys have so much fun together at such sweet locations... jealous!
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Old 04-26-2018, 02:54 AM   #56
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my very first set of Proline tyres!

Some 2.2/3.0 mounted sand paddles for the TH

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They are a bit bigger, and maybe the wheel offset is a little inboard, so they will rub on the cage in a flex situation.

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RTR tyre has clearance

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size difference is not so bad when they are all centered on a shaft, ithink it will be just fine for running on the sand.

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some silver paint on the wheels, looks better to me!

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Old 04-26-2018, 03:34 AM   #57
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Default Re: Yeti.stealths RTR Twin Hammers

I think those sand "scoopers" will do right - do you have enough axle thread to run a thicker hex to push the tires away enough to not rub? That may be the only solution...

I was bored the other day and found some 2.2" tires online that would be very entertaining as sand tires on my upcoming Bomber build -the heavyweight rig :


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Old 04-26-2018, 03:51 AM   #58
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looks like there is enough thread for a spacer, put those massive balloons on your bomber and it will be able to aquaplane!
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Old 04-26-2018, 04:59 AM   #59
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My boy hasn't got a handle on all that power yet!


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Old 04-26-2018, 05:08 AM   #60
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Looks like the paddles work pretty well! Your son is quite the pilot for a young feller! Watching this makes me want to build another FOFF rig!

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