Castle 1717 in the LST
 

Ok so after I turned the shaft to 5mm I figured I would give it a try in the LST with the TDR mount. My TDR mount is setup for m3 thread screws with a 25mm spacing, the 1717 uses m4 screws with a 25mm spacing. I have a RCM neu front cover that I modded a while back to accept m4 countersunk screws to bolt onto the motor. It hasm3 threads spaced 25mm apart so I used some short m3 countersunk screws to mount it to the TDR plate, after I mounted the 1717.

I need to get another TDR mount, so I will have "the dude" drill and countersink the front plate for m4 size screws. Turns out my new 1521 1y also has m4 threads, so maybe I will have him make me 2 of those plates...

Anyways, here are some pics. The spur is a 59t, and the 25t pinion will not mesh quite close enough. This is not due to lack of adjustment in the mount, the 1717 contact with the tranny "foot". I can cut the "foot" down about 1/8" and re-drill the hole in it and in the chassis to gain the necessary clearance. However a 63t (stock lst 2nd gear) spur should work fine without any mods to the tranny.

Pic time!

http://i206.photobucket.com/albums/b...p/DSCF4016.jpg
http://i206.photobucket.com/albums/b...p/DSCF4017.jpg
http://i206.photobucket.com/albums/b...p/DSCF4018.jpg
http://i206.photobucket.com/albums/b...p/DSCF4019.jpg

Here is the speed calc result. 42mph is not too bad, wish I had some larger pinions... Guess i could mod the tranny and use the 59t spur. That would get me around 45mph. Or use the xxl tranny internals...

Differential Ratio: 3.3076923076923075
Transmission Ratio: 1.9130434782608696
Spur Tooth Count: 63
Pinion Tooth Count: 25
Total Voltage: 22.2
Motor KV: 1577
Tire Diameter (inches): 6.5
Tire Ballooning (inches): 0
Spur/Pinion Ratio: 2.52 : 1
Total Ratio: 15.94595 : 1
Tire Circumference (inches): 20.42 inches (518.68 mm)
Rollout: 1.28:1
Total Motor Speed: 35009.4 RPM
Vehicle Speed: 42.46 mph (68.2 km/h)

You sure that's gonna be enough motor?

Haha if your spur ever locked up I think that motor would just spit the whole trans off!

Looks trick, I REALLY think Castle should offer a step shaft.

I'll be praying for your entire driveline....

OMFG, That 1717 dwarfs the tranny !
Anxious to hear feedback after you drive it, should be SICK.

It is a big motor. Fits well on the tdr mount. I have a feeling geared for low 40s it will be a best. Most likely will end up in the 6x6 lst, as that truck will be heavy and geared lower. The 1521 1y is plenty for a lst, but I could not resist giving the 1717 a try in a lighter vehicle.

looks great, im just waiting on some parts from TDR befor i get to mount mine

They have 20% off right now, I just picked up another mount and a spare m4 sized center piece.

I like that motor it looks like a Fosters can.

Jeff

Thats badass!!! the can is almost the same width as the chassis....PERFECT!!!!!

Funny, that was my beer of choice back in the day!

I have been looking at the Castle lineup and thought they ought to give them beer names like Tallboy, Little Kings, Fosters, and the 8 oz.

Jeff

I would like to see a "Old English" myself. Or maybe something potent named "Mad Dog 20/20"!!!

Night Train would be good too!

Well if you are going to get into wine how bout Thunderbird.

Jeff

i think you could gear this thing for 60 with that motor, running it on 6s james? this thing is going to be ganster! ha

yep i grabbed a single speed adapter and a m4 center too, sucks that he is out of the 6mm cullets

I used to drink that in college, oh the headaches!

yep, just need bigger pinions, or tires!

yeah, I was going to grab one of those collets as well...

That motor is just massive! Looks like you can just run a spur as a pinion with that motor.

I have the 6mm collet I can sell without the rest of the adapter. PM if interested.

you've gotta have some cen tires somewhere...

I have both, the chevrons and the bowties... Not sure if i want 4lbs of wheels/tires on my truck though! I really need to sell some tires, I have 3 26 gallon totes full... Must be at least 100lbs of wheels/tires...

The bowtie CENs are MUCH lighter than the chevrons.
For what ever it's worth ?
I have a couple sets and have compared the weights to the Losi ATX's and they weigh the same even though their much larger.

yep i would love to buy it, i sent you a pm (i need the whole pinion adaptor if you have it)

You ground your shaft and didn't need to hehe..... sorry I'll try to be somewhat useful here.

I see Castle is once again making things right, great job there!

I didn't want to put this in the 1717 thread, so I'm dumping it here lol.

While your grind job was HACK, it was a good one, and I've done crap like that more times than I can remember.

I've been trying to get a friend of mine to get a lathe/mill combo machine for years. The possibilities with these are almost endless. With a cheap indexer or angle vise you could do pretty much anything a 4 axis NC can do, albeit a bit slower.

The hard part is convincing people that these machines can pay for themselves in less than one year. And that goes for rookies too. Think about the money most of us have in ONE rc, not to mention the motor junkies like yourself :)

First up is a Harbor Freight, good...

http://www.harborfreight.com/cpi/cta...temnumber=5980

Now HF does carry one bigger/better than this, but for that kind of money- you want to go with a good name.
So next up is a Grizzly, better...

http://grizzly.com/products/Combo-Lathe-Mill/G4015Z

Another $150 will get you this, and you would NEVER need another machine, absolute best for the $

http://grizzly.com/products/Combo-La...tachment/G0516

$1300 is actually a small investment on the potential returns you could make with one of these. VERY small.
Even if you're only doing parts for yourself!

Hmm, I do like the look of this. I had planned to buy something, as it would be handy to have. I even have a decent area to put it.

I would not buy large equipment like this from HF, I have had a few of their drill presses and the bearing wear out very quickly... I plan to take one of them apart and see what can be done with the bearings...

I have read thru grizzly before and did like the combo machines. I hate to buy something I will outgrow, but you have to start somewhere...

Only issue is I would have to keep it a secret, everyone I know would want me to make stuff for them!

Yeah both HF and Grizzly have mini mills and mini lathes, but for the price difference you'd be a fool not to go with a Combo. HF stuff can be dodgy, you do get what you pay for!

The cheaper Grizzly I linked would be better for shorter, larger diameter parts. The $1295 one better for longer, smaller diameter parts. But the main advantage of the $1295 one is that it's layout is most similar to a standalone mill, and looks very user-friendly.

I would have one by now if I didn't have access to machines at work.

I can get you started on tool selection/profiles and tooling compatibility. And some basic tips on material characteristics.

I work with some lesser known stuff, Kovar, Invar, Monel, Beryllium, and Inconel to name a few.

Also all the better known stuff, so I'd be good for lots of tips.

In the meantime let's hope Castle sticks with 5mm!

Good to know, you are the machine guy! I started a thread about various machine type tools, any input would be greatly appreciated. I need some better/bigger tools for the shop. Mabe if I can get some work done the shop can pay for them!!!

Well I'm not degreed in anything, so machine guy may be a stretch...
I have a lot of interlocking knowledge in the metal trades, which to me is worth much more.

Mr. Monster certainly has me beat in a few areas, namely CNC :yes:

OK, so I got the m4 sized mount plate from tdr and got the 1717 mounted correctly. Plenty of engagement with the motor shaft into the pinion now that the rcm spacer has been removed. The motor also clears the tranny mount when running 25/63 gearing. I also assembled the rest of the truck, all I have to make is a battery tray and add a receiver. I plan to make the tray big enough to fit all of my 6s packs, so I can compare them with this motor. I plan t run the stock lst2 wheels and tires, so this gearing should do about 45mph. I am excited to see it roll again, it has been 6 months or so since I pirated the parts off it for the muggy.

Ok, 8 months later I got a wild hair up my azz and decided to finish this...

Put the rec in, mount up some badlands (bit smaller than I would have liked but the truck currently has 17mm hexes on it.) and threw in the zippy flightmaxx 5kmah 40c 6s pack.

This pack has sat since I ordered it, which must be more than 6 months. Not out of balance and still had good voltage so I ran it as it was, no charge!!!! Wow, lots of power with the 1717. Did about 10mins and everything was staying cool. Plan to swap the 20mm hexes on the truck tomorrow, charge the battery, and put the lst2 wheels/tires on it. Might balance them first, as I can imagine they will be off.

I now remember why I like the lst so much, it just handles well. Plus I can pull wheelies with the 1717 at any speed. More peppy than I remember the 1521 1y being.

This motor will make it into the 1/6 scale lst based buggy, should be just right for that. Plan to run the 1521 2y on 10s in the 6x6 lst, and run the other 1521 1y I have in this lst. Everything else will be sold. Expect alot of rollers and parts to pop up soon. I have alot of savage stuff to move!!!

So much for moving on huh? :lol:

He's hooked! :yes:

I'm glad though, we would miss you around these forums Linc.

Yeah, I miss it too, just so much going on these days.

Ok, ran the truck again. Managed to toast a shock on something, so the al bodies lst shocks are going in this thing asap. Pulled the cartridge out of the shock body. Also lost the pinion, but found it and put some blue loctite on there.

Tried 2c charging on the flightmax 5k 40c lipo, did the job just fine. I really like the lipo, with the lst geared for around 43mph with the badlands the lipo did not get over 110f after 20mins. The temps outside were well over 90f. Plenty of push too, the 1717 6s combo is probably too much for this truck. Standing back flips, and it will back flip up to 15mph if traction is good. I plan to put the 20mm hexes on and run the lst2 stock wheels/tires. That should give the 1717 a workout.

I will say the lst tranny with the FOC installed, coupled with the tdr hub and tin 63t losi spur is just about bullet proof. And the tin diff gears with the nova rc cups, and al cases have handled the power just fine. I can make the wheels spin in the 17mm hexes, lots of torque. Might even go up to 23mm hexes and run some other wheel/tire combo.

This power system will go in my planned 1/6 buggy build. I will gear that for 50mpg at least. Should be fun!!! Will not start that project till later in the year, when I have the house and stuff sorted out.

thats cool that you got back to this project, i still am useing the 1717 in my muggy, i need to get back to the xxl one of these days

Glad to hear you running again James! I'll have to take a ride up there soon and influence you to run more stuff!! Or give me the rest.... :lol:

That 1717 sounds like a real meat house! I know the 1521/1Y on 6s was amazing in my XXL I ran. Soo much power!!!

get back to it huh? maybe if that mikey guy wouldnt have took so many parts lol!

Yeah, the 1717 seems more powerful, or maybe better suited to this application, than the 1521 1y.

I do have another 1521 1y, it will go back in this truck, and the 1717 will go with something a little heavier.

Yeah, we do need to bash sometime, been a long time since I have see you, beefcake!!!

A 1/6th getting 50mpg should be good considering it's electric. :whistle:

I have been very happy with the 1717 in my LST2. I'm geared 25/63 with the "gear swapped" FOC on 6s. I still need to get my MMM tweaked in (it has a strange little stutter on take off). Linc, what motor would you recommend for a Muggy? I was thinking a 1518 or 1520. The 1515 looks a bit fast in the speed calc. Thanks!

-JB

I would go with the 1520. I ran a neu 1521 1y on 6s in my muggy with badlands, and some 40 series bowties and it did very well. I had 75k fluid in the center diff, as anything less caused massive front tire ballooning and no wheelies!!!