RX3s or Rx4?

Essayons · 09-29-2018, 10:08 AM

I haven't made up my mind which bike I like more, so I'm curious which bike you guys like best. I'm leaning towards the RX3S right now.

ben2go · 09-29-2018, 10:11 AM

Attachment to small to read.

Essayons · 09-29-2018, 10:28 AM

attachment wasn't enlarging so i removed it.

Sullybiker · 09-29-2018, 10:31 AM

From the CSC blog:

source: http://californiascooterco.com/blog/?p=30049

It's quite puzzling; the RX3S looks like more of a road bike, with slightly less ground clearance and what is likely to be a smoother engine at speed, but the speed figure seems rather pessimistic for the power output. Just 87mph from a 36hp bike? That has to be either wrong or geared to climb trees.

The RX4 is impressive. Much is being made of the 450lb weight but honestly it's not bad given the competition.

I'm really hoping Joe Berk in his capacity as quasi-official voice of CSC, or someone else that knows the RX3 well rides both a lot, I"m genuinely curious of the differences.

Emerikol · 09-29-2018, 11:35 AM

If I were in the market for another adventure-style bike, I would definitely go with the RX-4. As it is right now, the Missus and I are working on having a house built, and she has very firmly said no new bikes until we're in the new house. I can't decide if the next one will be a sportbike, or a cruiser. The CSC San Gabriel has some appeal, but I need a bike that can do sustained highway speeds for a couple of hours. As for the OP's question, I would always lean towards the bigger displacement bike. A larger bike can do most things that a smaller bike can do (the catch always being something like a really out of the way single track that's too narrow for anything more than a grain of rice on a piece of string), but the smaller bikes really struggle to do everything the larger bikes do. I had to ride one of my motorcycles back from Vegas a few weeks ago, and I took the DR because the Hawk wouldn't have done the speeds that trip requires. The Hawk is my go-to for around town, but when I have to go anywhere that the speed limit tops 55, I can't use it. Just my two cent's worth, hope it's helpful.

1cylinderwonder · 09-29-2018, 12:56 PM

Looking at the spec chart below, the L, W, & H dimensions, it hard to believe that the new RX4 and RX3S are both approximately “45 inches” longer than the RX3!
I guess that new twin cylinder engine is quite a “LONG” motor?.

goat67 · 09-29-2018, 01:53 PM

I found the correct specs

1cylinderwonder · 09-29-2018, 07:19 PM

Quote:

Originally Posted by goat67

I found the correct specs

goat67,
GOOD WORK! I couldn’t believe that the overall length of the RX3/S and the RX4 was listed as about 45” longer than the RX3!
Glad someone could get it straightened out.
Thanks, it helps visualize how the bike’s compare.

pete · 09-30-2018, 05:26 AM

450cc with a 94.5 x 66 bore / stroke...
that motor is set up to produce a lot
more power than the 43hp in the RX4..
with such a over square bore/stroke..
In fact it prob not the right bore and stroke
combination for a heavy ADV bike...

wonder what ealse it will be seen in...
I would say they have other uses for it in mined..
It will have the ability to rev fast and high..

..

Sullybiker · 09-30-2018, 07:23 PM

Quote:

Originally Posted by pete

450cc with a 94.5 x 66 bore / stroke...
that motor is set up to produce a lot
more power than the 43hp in the RX4..
with such a over square bore/stroke..
In fact it prob not the right bore and stroke
combination for a heavy ADV bike...

wonder what ealse it will be seen in...
I would say they have other uses for it in mined..
It will have the ability to rev fast and high..

..

It seems like the wrong way round for a go anywhere bike, right? Thought the DRZ motor has the same ratio, which surprised me.

Maybe it's a reliability or vibration mitigation measure? Less stress with the shorter stroke? I'm really curious to r ead an in-depth feature on it.

pete · 10-05-2018, 04:39 AM

Quote:

Originally Posted by Sullybiker

It seems like the wrong way round for a go anywhere bike, right? Thought the DRZ motor has the same ratio, which surprised me.

you are correct about the DRZ bore/stoke bias...
It was built as a dirt only bike that was later made
road legal... is why it has a 5 speed close ratio gear box
is it's draw back for ADV bike use...

.

NzBrakelathes · 11-13-2018, 11:42 AM

RX3 in China to fully spec (not USA poverty spec) $3450
RX3S no luggage boxes not RX4 headlamp etc $3900ish
RX3S with RX4 headlight set up luggage boxes $4300 abs add about $450
RX4 with luggage cases near $5000

All luggage’s cases are Tourfella never plastic boxes

wheelbender6 · 09-30-2018, 10:23 PM

I like smaller bikes so the RX3S is more my cup of tea. Alas, I need to pay off some credit cards before buying any more motorized toys.

Sport Rider · 10-01-2018, 12:06 PM

till I see prices, can't say. it's always part of the equation for me.

Biker_Andy · 10-02-2018, 12:08 AM

I'm guessing each will be about $1,000 more then the RX3. I like both bikes, funny they felt the need to develop two similar sized engines at the same time. Either would suit my riding better than the RX3.

I look forward to seeing what other Zongshen models these engines appear in.

09-29-2018, 10:08 AM	#1
Essayons Join Date: Mar 2018 Location: fontana, california Posts: 333	RX3s or Rx4? I haven't made up my mind which bike I like more, so I'm curious which bike you guys like best. I'm leaning towards the RX3S right now. __________________ 2018 TT 250 2016 RX3 1979 CB750K
	2

09-29-2018, 10:28 AM	#3
Essayons Join Date: Mar 2018 Location: fontana, california Posts: 333	attachment wasn't enlarging so i removed it. __________________ 2018 TT 250 2016 RX3 1979 CB750K
	0

09-29-2018, 11:35 AM	#5
Emerikol Join Date: Oct 2016 Location: Carrollton, GA Posts: 1,467	If I were in the market for another adventure-style bike, I would definitely go with the RX-4. As it is right now, the Missus and I are working on having a house built, and she has very firmly said no new bikes until we're in the new house. I can't decide if the next one will be a sportbike, or a cruiser. The CSC San Gabriel has some appeal, but I need a bike that can do sustained highway speeds for a couple of hours. As for the OP's question, I would always lean towards the bigger displacement bike. A larger bike can do most things that a smaller bike can do (the catch always being something like a really out of the way single track that's too narrow for anything more than a grain of rice on a piece of string), but the smaller bikes really struggle to do everything the larger bikes do. I had to ride one of my motorcycles back from Vegas a few weeks ago, and I took the DR because the Hawk wouldn't have done the speeds that trip requires. The Hawk is my go-to for around town, but when I have to go anywhere that the speed limit tops 55, I can't use it. Just my two cent's worth, hope it's helpful. __________________ First Rule of Aviation: -Never Pass Up The Opportunity to Pee I was struggling to get my wife's attention; I sat down on the couch and looked comfortable. That did the trick! My wife says I only have two faults. I don't listen and something else... If at first you don't succeed, try doing it the way I told you to... The Stable: 2005 Yamaha V-Star 650 - SOLD 2015 Suzuki DR 650 2015 RPS Hawk 250 - SOLD 2016 Ural Gear Up
	1

09-29-2018, 12:56 PM	#6
1cylinderwonder Join Date: Dec 2015 Location: Pismo Beach Posts: 387	The Spec Chart Below Looking at the spec chart below, the L, W, & H dimensions, it hard to believe that the new RX4 and RX3S are both approximately “45 inches” longer than the RX3! I guess that new twin cylinder engine is quite a “LONG” motor?.
	0

09-30-2018, 05:26 AM	#9
pete Join Date: Jan 2012 Location: ChCh , NZ Posts: 2,266	450cc with a 94.5 x 66 bore / stroke... that motor is set up to produce a lot more power than the 43hp in the RX4.. with such a over square bore/stroke.. In fact it prob not the right bore and stroke combination for a heavy ADV bike... wonder what ealse it will be seen in... I would say they have other uses for it in mined.. It will have the ability to rev fast and high.. .. __________________ 09 XT660R ... 06 TTR250 ... 80 Montesa H6 125 Enduro... 77 Montesa Cota 348 MRR "Malcom Rathnell Replica"... Current resto projects.. 81 Honda CT110... 80 Kawasaki KL250A1... 11 Husaburg TE125 enduro... "sold" along with another 31... Lifan 125 Pitbike.. "stolen" ... KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php All the best offroad rides in NZ... http://www.remotemoto.com/ E-mail... xtpete1@gmail.com
	0

09-29-2018, 10:11 AM	#2
ben2go Join Date: Jun 2011 Posts: 1,335	Attachment to small to read.
	0

09-29-2018, 10:31 AM	#4
Sullybiker Join Date: Dec 2016 Location: Western PA Posts: 363	From the CSC blog: source: http://californiascooterco.com/blog/?p=30049 It's quite puzzling; the RX3S looks like more of a road bike, with slightly less ground clearance and what is likely to be a smoother engine at speed, but the speed figure seems rather pessimistic for the power output. Just 87mph from a 36hp bike? That has to be either wrong or geared to climb trees. The RX4 is impressive. Much is being made of the 450lb weight but honestly it's not bad given the competition. I'm really hoping Joe Berk in his capacity as quasi-official voice of CSC, or someone else that knows the RX3 well rides both a lot, I"m genuinely curious of the differences.
	2

11-13-2018, 11:42 AM	#12
NzBrakelathes Join Date: Jun 2016 Location: Hell Posts: 2,408	RX3 in China to fully spec (not USA poverty spec) $3450 RX3S no luggage boxes not RX4 headlamp etc $3900ish RX3S with RX4 headlight set up luggage boxes $4300 abs add about $450 RX4 with luggage cases near $5000 All luggage’s cases are Tourfella never plastic boxes
	0

09-30-2018, 10:23 PM	#13
wheelbender6 Join Date: May 2015 Location: Houston area Posts: 1,902	I like smaller bikes so the RX3S is more my cup of tea. Alas, I need to pay off some credit cards before buying any more motorized toys. __________________ "Its not WHAT you ride; its THAT you ride"
	1

10-01-2018, 12:06 PM	#14
Sport Rider Join Date: Jan 2016 Location: Mooresville NC Posts: 2,116	till I see prices, can't say. it's always part of the equation for me.
	1

10-02-2018, 12:08 AM	#15
Biker_Andy Join Date: Oct 2016 Posts: 347	I'm guessing each will be about $1,000 more then the RX3. I like both bikes, funny they felt the need to develop two similar sized engines at the same time. Either would suit my riding better than the RX3. I look forward to seeing what other Zongshen models these engines appear in.
	0